Like the Shinto Saw Rasp, the Planer Saw Rasp is constructed from 10 hardened teeth saw blades held together by rivets, featuring both coarse and fine sides, with the teeth oriented to cut on the push stroke. What’s different is the addition of a grip for the offhand which increases controllability, as well as permitting more aggressive stock removal. Plus, a unique blade holding system allows the blade to be flipped or replaced with a new blade when needed.Hardened steel teethTeeth designed to prevent clogging. Replaceable blade, Double-sided: coarse and fine.